diff --git a/include/hwapi.h b/include/hwapi.h
index 8464ae0..e1a8f5f 100644
--- a/include/hwapi.h
+++ b/include/hwapi.h
@@ -75,7 +75,8 @@ V4.0  6.9.2023: activating DC-Bootloader in slve-lib (SM)
 //for CAmaster:	
 
 class QSharedMemory;
-
+class ReportingThread;
+class DownloadThread;
 class hwapi :   public QObject,
                 public hwinf
 {
@@ -87,7 +88,8 @@ private:
     void sub_storeSendingText(QByteArray *buf) const;
     QTimer *hwapi_TimerPayment;
     QSharedMemory *m_sharedMem;
-    //QTimer *hwapi_triggerBL;
+    ReportingThread *m_reportingThread;
+    DownloadThread *m_downloadThread;
 
 public:
     explicit hwapi(QWidget *parent = nullptr);
@@ -1306,8 +1308,8 @@ public:
 
 
     // download device controller
-    void dcDownloadInit(QString const &fileToDownload) override;
     void dcDownloadStart() override;
+    void dcDownloadRequest(QString const &fileToDownload) override;
     bool dcDownloadRequested() const override;
     QString dcDownloadFileName() const override;
     void dcDownloadResetRequest() override;
@@ -1320,12 +1322,13 @@ public:
     void dcDownloadSetCurrentBlockNumber(uint16_t currentBlockNumber) override;
     uint16_t dcDownloadGetTotalBlockNumber() const override;
     uint16_t dcDownloadGetCurrentBlockNumber() const override;
-signals:    // for download
-    void hwapi_reportDCDownloadStatus(QString const &status);
-    void hwapi_reportDCDownloadSuccess(QString const &msg);
-    void hwapi_reportDCDownloadFailure(QString const &errorMsg);
 
-signals:
+    virtual hwapi *getAPI() override;
+
+signals:    // for download
+    void hwapi_reportDCDownloadStatus(QString const &) const;
+    void hwapi_reportDCDownloadSuccess(QString const &) const;
+    void hwapi_reportDCDownloadFailure(QString const &) const;
     // already declared in interfaces.h
     void hwapi_templatePrintFinished_OK(void) const;
     void hwapi_templatePrintFinished_Err(void) const;